Cosmic ray test for a T0 detector
Cosmic ray test for a T0 detector
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DOI：
10.1088/1674-1137/35/10/011
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发表时间：
2011-10
影响因子：
3.6
通讯作者：
Fu Zai-wei;Qian Sen;Ning Zhe;L. Shu-dong;Chen Xiao-hui;Heng Yuekun;Wang Yi-Fang;Qi Ming;Yang Shuai;Sun Yong-jie;Shao Ming;Lihua Cheng;Zheng Yang-heng
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文献类型：
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作者：
Fu Zai-wei;Qian Sen;Ning Zhe;L. Shu-dong;Chen Xiao-hui;Heng Yuekun;Wang Yi-Fang;Qi Ming;Yang Shuai;Sun Yong-jie;Shao Ming;Lihua Cheng;Zheng Yang-heng
北京谱仪III的飞行时间(ETOF)探测器端盖计划采用多间隙电阻板室(MRPC)进行升级，设计的MRPC的时间分辨率约为50ps。因此，需要建立一个时间为零(T0)的探测器，为MRPC束流测试提供高质量的参考时间。因此，使用塑料闪烁体瓷砖(BC420)与四个快速光管(PMTs，滨松H6533)相耦合，构建了一个T0探测器。利用宇宙线实验研究了探测器的时间特性，讨论了塑料闪烁体尺寸、读出方式和角度效应等与时间分辨率有关的因素。T0探测器的时间分辨率为~41-62ps，可用于MRPC束流测试。
The endcap of time-of-flight (ETOF) detector in BES (Beijing Spectrometer) III is planned to be upgraded by using multi-gap resistive plate chambers (MRPCs) and the designed time resolution of the MRPCs is around 50 ps. Thus a time-zero (T0) detector needs to be built to offer a high quality reference time for the MRPCs beam test. So a T0 detector is built using plastic scintillator tiles (BC420) to couple with four fast phototubes (PMTs, Hamamatsu H6533). The timing properties of the detector is studied by using a cosmic ray test and factors related to the time resolution, such as plastic scintillator size, readout mode and angle effects, are discussed. T0 detector timing resolutions of ~41–62 ps are achieved, which means that the T0 detector can be used in the MRPC beam test.